????:1??????:????????????

2???????

3?????????

4???????????

5?????????????

???? ???????????? ???????????????????????????(NBC)???,???12????24????????,?????????

??,???????,????????«?????????????????»???????????,??????????????????????,?????????????????????

????,?1782?????,???????????????????????????“??????????????”????????????????????????????,????

??????,????????????????????:??????????????????,????5????,??????????,?????????????????????????????????????,?,???????????,?????“???????????”,????????????“????”???????????????????? ?????:??